Portion of a golf putter head



FIG. 1 is a bottom plan view of a portion of a golf putter head showingmy new design.

FIG. 2 is a left side elevational view thereof; the right side being amirror image thereof.

FIG. 3 is a front elevational view thereof.

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a bottom perspective view thereof.

The broken line showing of various portions of the golf putter head isfor illustrative purposes only and forms no part of the claimed design.

The ornamental design for a portion of a golf putter head, as shown anddescribed.